Pangaribuan, Bambang Wiranto, Natalina Purba, Kevin William Andri Siahaan, Eduard F Sidabutar, Veria Tika Sihombing, Diana Falentina Simamora, and Johan R Matondang. 2022. “The Implementation of Demonstration Method to Increase Learning Outcome in Natural Science Lessons”. Jurnal Obsesi : Jurnal Pendidikan Anak Usia Dini 6 (4):3680-92. https://doi.org/10.31004/obsesi.v6i4.1711.